A4B3_hR7_166_2c_ac & a,c/a,x2,x3,x4 --params=3.335,7.48635682159,0.29422,0.12967,0.2168 & R-3m D_{3d}^{5} #166 (ac^3) & hR7 & $D7_{1}$ & Al4C3 & & T. M. Gesing and W. Jeitschko, Z. Naturforsch. B 50, 196-200 (1995) 1.00000000000000 1.66750000000000 -0.96273157387370 8.32233333333333 0.00000000000000 1.92546314774740 8.32233333333333 -1.66750000000000 -0.96273157387370 8.32233333333333 Al C 4 3 Direct 0.29422000000000 0.29422000000000 0.29422000000000 Al (2c) -0.29422000000000 -0.29422000000000 -0.29422000000000 Al (2c) 0.12967000000000 0.12967000000000 0.12967000000000 Al (2c) -0.12967000000000 -0.12967000000000 -0.12967000000000 Al (2c) 0.00000000000000 0.00000000000000 0.00000000000000 C (1a) 0.21680000000000 0.21680000000000 0.21680000000000 C (2c) -0.21680000000000 -0.21680000000000 -0.21680000000000 C (2c)